PT-2020-1571 · Netwide+1 · Netwide Assembler+1

Mijeff · Published 2020-01-06 · Updated 2021-02-04 · CVE-2019-20352

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Netwide Assembler (NASM) version 2.15rc0

Description A heap-based buffer over-read issue occurs in the set text free function when called from expand one smacro in asm/preproc.c, potentially allowing an attacker to impact the confidentiality, integrity, and availability of protected information. This can be triggered via a crafted .asm file.

Recommendations For Netwide Assembler (NASM) version 2.15rc0, consider avoiding the use of crafted .asm files until a patch is available. As a temporary workaround, restrict the use of the set text free function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2020-00581

CVE-2019-20352

OESA-2021-1022

Affected Products

Astra Linux

Netwide Assembler

References · 13

• 🔥 https://bugzilla.nasm.us/show_bug.cgi?id=3392636 · Exploit
• https://cve.org/CVERecord?id=CVE-2019-20352 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-20352 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-20352 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-24241 · Security Note
• https://osv.dev/vulnerability/CVE-2019-20352 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00581 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-20352 · Security Note
• https://ubuntu.com/security/CVE-2019-20352 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-20352 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2021-1022 · Vendor Advisory
• https://access.redhat.com/security/cve/cve-2019-20352 · Note
• https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1022 · Note